<template>
  <div class="app-container">
    <!-- 导入excel文件的关键代码是这个组件 -->
    <upload-excel-component
      :on-success="handleSuccess"
      :before-upload="beforeUpload"
    />
    <el-table
      :data="tableData"
      border
      highlight-current-row
      style="width: 100%; margin-top: 20px"
    >
      <el-table-column
        v-for="item of tableHeader"
        :key="item"
        :prop="item"
        :label="item"
      />
    </el-table>
  </div>
</template>

<script>
import UploadExcelComponent from '@/components/UploadExcel/index.vue'
import { formatExcelDate } from '@/utils'
import { importEmployee } from '@/api/employees'
export default {
  name: 'UploadExcel',
  components: { UploadExcelComponent },
  data() {
    return {
      tableData: [],
      tableHeader: []
    }
  },
  methods: {
    // 上传之前的检查,限制文件大小不能超过1m
    beforeUpload(file) {
      // file.size  ----->单位bytes    bytes  电脑键盘127键位都是abcd ---->1bytes 汉字2-6
      // 1kb = 1024bytes
      const isLt1M = file.size / 1024 / 1024 < 1

      if (isLt1M) {
        return true
      }

      this.$message({
        message: 'Please do not upload files larger than 1m in size.',
        type: 'warning'
      })
      return false
    },
    transZhkeyToEnkey(data) {
      const mapInfo = {
        '入职日期': 'timeOfEntry',
        '手机号': 'mobile',
        '姓名': 'username',
        '转正日期': 'correctionTime',
        '工号': 'workNumber',
        '部门': 'departmentName',
        '聘用形式': 'formOfEmployment'
      }
      return data.map(item => {
        // Object.keys(item)//['入职日期','姓名', '工号','手机号',  '转正日期','部门',]
        const enObj = {}
        Object.keys(item).forEach((zhKey) => {
          const enKey = mapInfo[zhKey]
          if (enKey === 'timmeOfEntry' || enKey === 'correctionTime') {
            // 传入excel时间格式,还原成标准的时间格式
            enObj[enKey] = new Date(formatExcelDate(item[zhKey]))
          } else {
            enObj[enKey] = item[zhKey]
          }
        })
        return enObj
      })
    },
    async importAddEployees(data) {
      try {
        const res = await importEmployee(data)
        console.log('importEmployee', res)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        this.$router.back()
      } catch (err) {
        console.log('importEmployee', err)
      }
    },
    // 上传成功之后的回调,可以获取到excel表格中的数据
    handleSuccess({ results, header }) {
      this.tableData = results
      this.tableHeader = header
      //   console.log(results, 'results')
      //   console.log(header, 'header')
      const data = this.transZhkeyToEnkey(results)
      //   console.log(data, 'data')
      this.importAddEployees(data)
    }
  }
}
</script>
